That depends on what you mean by "drive" and whether you see it as a character-oriented idea, or one of author-instantiated intent.
In posts on this forum, generally, drive means the "true drive" of the character, a.k.a., the Problem element, the author-instantiated view. The Focus does display as a character-perspective drive, though, as you rightly point out.
Per a look from outside the story, the inaccurate statement of blame would be the driving force, the source of conflict in this quote. That is, the Problem is the real drive here. That would not, of course, be what the character would claim, as you display. To the character, the problem is the cloud, and thus, that cloud as a problem is what drives them. The Focus is seen as a drive by the character.
In essence, the Problem is what truly drives the character, while the Focus is what the character would claim is driving them. The word "drive" used in the context on this forum generally refers to the former: The true source of their Problem, what is actually driving them. The minute the Solution is used, that very real, and very hidden (to the character), reason for their actions, that true drive, falls away.
On the other hand, I can see why that might be a dangerous term to use in certain contexts, due the very real possibility of the character-perspective interpretation of the word. Although, I must admit that this idea of "true drive" is what helped me find or understand the Problem in many stories. (I would often see the Focus as the problem, exactly as the characters in a story would.)